package com.tanhua.dubbo.api;


import com.tanhua.dubbo.service.TimeLineService;
import com.tanhua.dubbo.utils.IdWorker;
import com.tanhua.model.mongo.Movement;
import com.tanhua.model.mongo.MovementTimeLine;
import com.tanhua.model.vo.PageResult;
import org.apache.dubbo.config.annotation.DubboService;
import org.bson.types.ObjectId;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Sort;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.data.mongodb.core.aggregation.Aggregation;
import org.springframework.data.mongodb.core.aggregation.AggregationResults;
import org.springframework.data.mongodb.core.aggregation.TypedAggregation;
import org.springframework.data.mongodb.core.query.Criteria;
import org.springframework.data.mongodb.core.query.Query;
import org.springframework.data.mongodb.core.query.Update;

import java.util.List;
import java.util.stream.Collectors;

/**
 * @author lifeihu
 * @date 2021/12/26
 * @TIME:19:01
 */
@DubboService
public class MovementApiImpl implements MovementApi {
    @Autowired
    private MongoTemplate mongoTemplate;

    @Autowired
    private IdWorker idWorker;
    @Autowired
    private TimeLineService timeLineService;
    @Override
    public void publish(Movement movement) {
        //1. 保存动态数据
        movement.setPid(idWorker.getNextId("movement"));
        movement.setCreated(System.currentTimeMillis());
        //2. 保存好友时间线数据
        mongoTemplate.save(movement);
        timeLineService.saveTimeLine(movement.getUserId(), movement.getId());

    }
    @Override
    public PageResult findByUserId(Long userId, Integer page, Integer pagesize) {
        //创建Criteria
        Criteria criteria = Criteria.where("userId").is(userId);
        //创建Query对象
        Query query = Query.query(criteria);
        //查询总记录数
        long count = mongoTemplate.count(query, Movement.class);
        //设置分页查询参数
        query.skip((page -1 ) * pagesize).limit(pagesize)
                .with(Sort.by(Sort.Order.desc("created")));
        //查询分页数据列表
        List<Movement> movements = mongoTemplate.find(query, Movement.class);
        //构造返回值
        return PageResult.init(page,pagesize,count,movements);
    }

    @Override
    public List<Movement> findFriendMovements(Integer page, Integer pagesize, Long friendId) {
        //1、根据friendId查询时间线表
        Query query = new Query(Criteria.where("friendId")
                .is(friendId)).skip((page -1) * pagesize)
                .limit(pagesize).with(Sort.by(Sort.Order.desc("created")));
        List<MovementTimeLine> movementTimeLines = mongoTemplate.find(query, MovementTimeLine.class);
        //2、提取动态id列表
        List<ObjectId> ids = movementTimeLines.stream().map(MovementTimeLine::getMovementId).collect(Collectors.toList());
        //3、根据动态id查询动态详情
        Query query1 = new Query(Criteria.where("id").in(ids).and("state").is(1));
        List<Movement> movements = mongoTemplate.find(query1, Movement.class);
        return movements;
    }

    @Override
    public List<Movement> findMovementsByPids(List<Long> pids) {
        Query query = Query.query(Criteria.where("pid").in(pids));
        return mongoTemplate.find(query,Movement.class);
    }

    @Override
    public List<Movement> randomMovements(Integer counts) {
        //1、创建统计对象，设置统计参数
        TypedAggregation aggregation = Aggregation.newAggregation(Movement.class,Aggregation.sample(counts));
        //2、调用mongoTemplate方法统计
        AggregationResults<Movement> results = mongoTemplate.aggregate(aggregation, Movement.class);
        //3、获取统计结果
        return results.getMappedResults();
    }

    @Override
    public Movement findById(String movementId) {
        Movement movement = mongoTemplate.findById(movementId, Movement.class);
        return movement;
    }

    @Override
    public PageResult findMovementsByUserid(Long uid, Integer state, Integer page, Integer pagesize) {
        Query query = new Query();
        if(uid!=null){
            query.addCriteria(Criteria.where("userId").is(uid));
        }
        if(state!=null){
            query.addCriteria(Criteria.where("state").is(state));
        }
        long count = mongoTemplate.count(query, Movement.class);
        query.skip((page-1)*pagesize).limit(pagesize).with(Sort.by(Sort.Order.desc("created")));
        List<Movement> movements = mongoTemplate.find(query, Movement.class);
        return PageResult.init(page,pagesize,count,movements);
    }
    @Override
    public void update(String movementId, Integer state) {
        Query query = Query.query(Criteria.where("id").in(new ObjectId(movementId)));
        Update update = Update.update("state", state);
        mongoTemplate.updateFirst(query, update, Movement.class);
    }
}
